Mortgage Stress Test Calculator (Canada)
Estimate whether a home purchase passes a simplified Canadian mortgage stress test using income, debts, housing costs, and a qualifying rate.
Inputs
Income & debts
Home & mortgage
Housing costs & ratios
Results
Qualifying rate
0.00%
Qualifying payment
$0
GDS ratio
0.0%
TDS ratio
0.0%
Mortgage amount
$0
Max home price (est.)
$0
| Component | Amount | Note |
|---|
Ratios vs limits
Compare your GDS/TDS to the chosen thresholds.
Contract vs qualifying payment
See how the qualifying payment compares to the contract-rate payment.
How to use
- Enter your household income, other monthly debts, and the home price + down payment you want to test.
- Add your contract mortgage rate, stress test floor rate, amortization, and your housing costs like property tax, heating, and condo fees.
- Click Calculate to estimate the qualifying rate, payment, GDS/TDS ratios, pass/fail result, and a rough maximum affordable home price.
If you want the regular monthly payment at the actual contract rate, use the Mortgage Payment Calculator (Canada). If you are checking whether a lower rate through refinancing could improve affordability later, use the Mortgage Refinance Calculator (Canada).
Mortgage stress test calculator (Canada): estimate qualifying ratios before you apply
In Canada, many borrowers need to qualify not only at their contract mortgage rate, but at a higher “stress test” qualifying rate. The basic idea is simple: can your income still support the mortgage if rates are higher than the rate on your actual loan offer? A stress test calculator helps you estimate this before you shop seriously, which can save time and help set a more realistic price range.
This calculator uses a simplified approach. It estimates a qualifying rate as the higher of your contract rate plus a buffer and a chosen floor rate, then calculates a qualifying payment using your amortization. That payment is combined with other housing costs like property tax, heating, and part of condo fees to estimate GDS and TDS ratios. The result is a practical planning tool: you can see whether a target home price may pass or fail under common simplified ratio limits, and you can estimate a rough maximum affordable price.
This is not lender underwriting, and real approval rules may differ by lender, insured vs uninsured borrowing, and your exact file. But it’s still a useful planning step. If you want to compare against your regular monthly payment at the actual contract rate, use the Mortgage Payment Calculator (Canada). If your future plan includes changing the loan later, you may also want the Mortgage Renewal Calculator (Canada) and the Mortgage Refinance Calculator (Canada).
FAQ
It’s a qualifying check that tests whether your income can support the mortgage at a higher qualifying rate, not just at your actual contract rate.
No. This is a simplified planning calculator. Actual lender underwriting can use different rules, documentation, and ratio treatment.
This calculator uses a common simplified approach of including 50% of condo fees in housing costs for planning purposes.
Lenders can still decline a file for many reasons including credit, income verification, property type, debt details, and internal policy differences.